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Anm' Frio.

IMPROVMENT. iN PRINTINGPRESSES.

Specification forming part of Letters Patent No. l, dated July 13, 1875; application filed May 28, 1875.

To all whom it may concern:

Be it known that I, MARGELLUS A. PEN- DLETON, of Geneva Lake, in the county of Walworth and State of Wisconsin, have invented certain Improvements in Printing- Presses, of which the following is a specifica tion:

My invention consists in the combination of a stationary bed, a hinged platen, and a peculiar double system ot' levers for operating the latter.

Fig. l represents a top plan view of my press; Fig. .2, a longitudinal vertical section through the center ot' the same.

A represents a strong, rigid frame; B an upright bed secured firmly in one end ot' the frame, and (l a platen hinged at the lower edge to the frame and arranged to swing up against the bed. The platen is operated by means ot' two series or systems ot' levers arranged in the sides of the frame and connected by cross-bars, each system consisting of a lever, D, pivoted at its middle in the rear end of the frame, and connected at its upper'end by a bar, E, to the platen, and at its lower end by a link, F, to a hand-lever, G, which is pivoted in the frame and extended upward and backward over the rear end of the same, as shown. The two series'of levers and bars, arranged in opposite sides of the frame and connected with the opposite ends of the platen, are alike in all respects. and are connected, as shown, by cross-bars, so that they operate together, the bar which connects the rear ends ot' the hand-levers being fashioned into a handle by which the press is operated. It will be seen that the arrangement ot' the parts is such that upon depressing the handlevers the platen is forced forward against the bed, and that as the said levers rise the platen is permitted to fall back again. The

V'p/aits are also arranged in such manner that as the platen approaches the bed the power of the levers increases very rapidly, so that although the platen starts up quickly it is brought in contact with the type easily and with great pressure. In order to prevent all noise and concussion when the hand-leversy are depressed, rubber or other elastic cushions c are mounted in the frame for the said levers to strike upon, as shown in Fig. 2. The fulcrum of the platen is thrown forward and the weight of the various parts so disposed that although they nea'rly balance each other the platen will fall back and remain when the handlevers are released. On the rear end ot' the frame above the bed I secure a cast-iron shelf, H, held in place by lugs which are formed thereon and secured in recesses in the frame by means of a transverse rod or pin, so that by withdrawing said rod the shelf maybe released and its removal permitted. The face of the platen will be made in a separate piece and supported by setscrews behind its center and corners, and the bed will be provided with notches to receive the lower edge of the chase and set-screws to hold the upper edge of the same. When it is desired to opera-te the press by foot instead of by hand a treadle-rod is connected to the handle connecting the levers.

Having described my invention, what I claim is In combination with the bed B and swinging platen (l, the duplicate levers D, bars E, links F, and hand-levers G, connected by crossbars, as shown land described.

MARCELLUS A. PENDLETON.

Witnesses:

C. L. OATMAN, JAMES SIMMONS.. 

